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CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.
An Elementary Treatise on Plane and Solid Geometry - Page 24
by Benjamin Peirce - 1837 - 150 pages

## Plane and Solid Geometry

Arthur Schultze, Frank Louis Sevenoak - Geometry - 1902 - 394 pages
...the altitude of the frustum. BOOK VIH THE SPHERE 671. DEF. A sphere is a solid bounded by a surface, all the points of which are equally distant from a point within called the center. 672. DEF. The radius of a sphere is a straight line drawn from the center to any point...

## Solid Geometry, Volumes 6-9

George Albert Wentworth - Geometry, Solid - 1902 - 248 pages
...THE SPHERE. PLANE SECTIONS AND TANGENT PLANES. 737. DBF. A sphere is a solid bounded by a surface all points of which are equally distant from a point within called the centre. 738. A sphere may be generated by the revolution of a semicircle ACB about its diameter AB as an axis....

## Concrete Geometry: Introductory to Formal Plane Geometry

Theophilus Nelson - Geometry, Modern - 1902 - 154 pages
...following definition of a cirFIG. 10. cumference. Definition: — A circumference is a curved line all points of which are equally distant from a point within called the centre. 28. A circumference incloses or bounds a portion of a plane. This portion of a plane is called a circle....

## Elementary School Mathematics by Grades: Arithmetic, geometry, and algebra ...

William Estabrook Chancellor - Arithmetic - 1902 - 178 pages
...many cubic feet does it contain'! THE SPHERE A sphere is a body bounded by a uniformly curved surface, all the points of which are equally distant from a point within called the center. The diameter of a sphere is a straight line passing through the center of the sphere, and...

## Elements of Plane and Solid Geometry

Alan Sanders - Geometry - 1903 - 384 pages
...BC. AF bisects angle DAE. EF 78 BOOK II 247. DEFINITIONS. A circle is a portion of a plane bounded by a curved line, all the points of which are equally distant from a point within called the center. The bounding line is called the circumference. A straight line from the center to any point...

## Elements of Plane and Solid Geometry

Alan Sanders - Geometry - 1903 - 384 pages
...volume of the remaining frustum. BOOK IX 1056. DEFINITIONS. A sphere is a solid bounded by a surface, all the points of which are equally distant from a point within called the center. A radius of a sphere is a straight line drawn from the center to the surface. A diameter...

## A Manual of Mechanical Drawing

Philip Devereux Johnston - Mechanical drawing - 1903 - 149 pages
...sides a Dodecagon. 47 A Circle is a plain figure bounded by a curved line called the Circumference, all points of which are equally distant from a point within called the Centre. 48 A Radius of a circle is a straight line drawn from the centre to the circumference. 0 49 A Diameter...

## Wentworth & Hill's Exercise Manuals: Arithmetic, Issue 1

George Albert Wentworth - 1903 - 318 pages
...feet of brick does the chimney contain ? A Sphere is a solid bounded by a curved surface all pointa of which are equally distant from a point within called the centre. A straight line drawn from the centre to the surface is called a radius, and a straight line drawn...